Quality evaluation and shelf life assessment of raw and value added fish product (fish cutlet) of Wallago attu during frozen storage conditions (-12 °C)

The effect of dietary protein content on the growth potentials, digestion efficiency of proteins, nitrogen excretion rates were monitored in freshwater prawn Macrobrachium rosenbergii after fed with Four Experimental diets with differential amounts of proteins. The Experimental Diets with relatively high protein content capable of including highest growth potentials compared to Experimental diets with low protein quantities. Growth parameters including weight gain, Specific growth rates, Daily growth rates, Feed conversion efficiency, Nitrogen excretion and Nitrogen retentions in the prawns indicate that Experimental diets with more than 40% dietary protein are capable of inducing the best growth potentials and are recommended for use in freshwater prawn Aquaculture.